A new documentary has revealed that London Underground workers are urged to place suicide victims' bodies in cupboards and bins in order not to disrupt service. About 50 people commit suicide each year in "the tube," which serves more than one billion riders annually.

"This documentary provides a rare glimpse into the depths of the iconic Tube network that passengers don't see, as workers reveal the dilemmas and pressures that they must reconcile to keep this hugely complex and strained system running."

Among the concerns on the minds of employees are signal failures, emergency response and train derailments.